Loading device



'June 10, 1930. w. K; LIYGGETT LOADING DEVICE Original Filed Jan. 18, "1926 Patented June 10, 1930. V

WILLIAM K. LIGGETT, or COLUMBUS, LOHIOQASYSIGNOR TO HE JEFFRE NUFAG- roams COMPANY, or COLUMBUS, 01110, A oonronArron OF-OHIO LOADING DEVICE Application mea aanuar 18, 1926, Serial. m. 82,047. Renewed lV Iay 17, 1929. c 7' I terial from a supply hopper to an elevator bucket of the type commonly known as a skip hoist. y

I The especial object of this invention is to provide a combined loading chute and con- 19 trol valve arranged to be operated by move- 7 equipped it is in closed position. i

ment ofa skip bucket, to permit material to flowinto said bucket when in loading position, and to prevent such flow when the bucket is removed from loading position.

The means whereby I attain this object are fully set forth in thefollowing specifica-' tion, and illustrated in the accompanying drawings of which a l Fig. 1, is a side elevation of a skipbucket and loading chute embodying my presentinvention. q Fig. 2, is a fragmentary sectional View taken along line H ll of Fig. 1. a Fig. 3, is a diagrammatic elevation-ofa material storing plant having'a skip hoist with the'devices of .my present in-' vention, showing the relation of thejskip bucket and loading chute to the other elements of the installation;

Fig. 4, is. a sectional view tral vertical plane of Fig.1, showingythe relation of the material flowingfthroughthe' spout to the spout and bucket while in loading position. v f

Fig. 5, is a fragmentary sectional View, similar to Fig. .4, showing the relation of the material within the spout to said spout when Like numerals refer to similar parts in the several figures.

As shown 1n ably of a generally rectangular cross section. The skip 1 is 3 upon whic are'fjournale'd thetraction wheels 1 and 5 adapted to 'travel' between the Vertical guide rails 6 and 7 toguidemovement of the skip between the points of-load :ing and discharge. Fixed to the bottom of the skip 1 is a transversely extending shafttaken a. an

the. drawing the numeral 1, indicates askip, or bucket, which is prefer- 1provided with two axles 2 and r 1 the skip .1 are brackets 18 having rollers 19 8 to the projecting ends of which is connected the bail 9 to which the hoisting rope 10 is at.-

tached. When the rope 1O istensioned by the hoisting devices, which are not shown in the drawing, the "skipl is raised, the guide rollers 4 and 5 guidingvit to the discharge 9 position, in the installation here illustrated,

above the storage bin 11. The relation of v,

the. guide railsG and 7 and ofthe rollers 4: and 5 is such'that when the skip reaches the bottoniupwardsto discharge its contents into said bin,and will beautomatically refturnedto its material carrying position as n I I I upper extremity of 1ts travel 1t will be turned 7 is a supply hopper 12, which may 'bejgof any preferred 7 form and dimensions,' and j which may be associated with any'pre'ferred source of rnateri'al supply. As here illusv trated the hopper 12 ispositioned beneath a railroad track 13 'toireceivematerial discharged through-the bottom of the railroad car 14in the common and well known manner. Opening out of the hopper 12, is an.-

open trough, or chute, 15 the bottom of which is inclined at an angle. upon which the material to be loaded will flow from the hopper 12. Supported upon the pivot member 15 is a conductor spout 16, which'is also an open trough, adapted,-when in itsflowe'r position, to conduct loose material from the hopper 12 to the skip bucket 1, and whenf in its upper position to'close the end of the chute 15' and thereby prevent the flow of *material the refrom. vA counter weight 17 fixed to the conductor spout 16acts to hold the spout inlitsgclosedposition against the pressure ofmaterial'in the chute .15. 'Attached to the upper forward-corners of adapted to engagethe operating cams 20 and [21 of the conductor-spout 16; The cams 20' and2l arefpreferab'lyformed inte ral with I now thereinto.

rollers 19 engage the lower cams 20 to depress the outer end of the spout 16, which overlaps the top edge of the skip to permit material to When the skip 1 moves up- Wardly the rollers 19 engagethe upper cams 21 to lift the outer end of the spout 16 to its closed position to thereby cut off the flow of material from the hopper 12. The counter weight 17 "retains'the spout in its closed position until it is moved therefrom by downward movement of the skip. The baffle plate 23, fixed to the spout 16 in position to partially close its outer end, serves to limit the discharge of material from said spout. The proportions of these parts are such that, yvhen the skip bucket 1 is in its loading posi tion, the discharge end of the spout will extend downwardly into said bucket to such a position that the accumulation'of material in the bucket will stop the flow of material in the spent when a predetermined load has been delivered, the battle plate 23 is in such position as to preventspillage of materal from the'spoutas the bucket ascends. The bottom plate "of the spout 16 is bent downwardly at 15 to'form a lip, or's'craper, adapted to push the loose material rear'wardly of the skip b'ucket 1, as the spout. 16 moves upwardly to its closed position, and thereby form a cavity into which the material flowing from the spout may fall, preventing such material from spilling over the for'war'd edge of the bucket as it ascends. As the spout 16 approaches its ,clo sedposition any-material remaining there'- ii; falls back ar the trough 15, thesides of which are of sufficient height to retain such material until the bucket is in position to receive it from the spout 1 6.

' It is to be understood that I d not limit myself to the preciseronst'ruction'here described and illustrated, since it is obvious that the devices may be subject to wide varlaspirit of my invention.

What I claim is 1, In a machine of the class described, the combination with a receptacle reciprocable in a'fixe d path, of a spout pivotally supported adjacent said path adapted when in one position to'con'duct material to said receptations as to details without departure from the ole, vmeans actuated by movement of "said receptacle to turn "said spout about its pivotal support to a material conducting position or to a material obstructing position, and a downwardly turned lip formed on said spoilt agans forthepurpose set forth.

The combination with a receptacle adaptedto travelup and'downin a fixed path,

and a bin having an outlet adj ac'ent sa'id path, of a spout pivotally mounted at said outlet,

.me'ans 'actuat'ed upon up and down movement of receptacle to turnsaid spout aboutits axis respectively to a position to c'onduct ma'terial from the bin to therec'e'p- "tacle or to a position to obstruct the flow of material from the bin, and a downwardly turned lip on the lower extremity of said spout and forming a continuation of the bottom wall thereof, said lip being so disposed as to project inwardly of the receptacle beyond the adjacent edge thereof when the receptacle is in loading position.

3. The combination with a receptacle adapted to travel up and down in a constant path, and a bin having an outlet adjacentsaid path, of an open topped spout pivotally mounted at said outlet, means actuated upon up-and down movement of said receptacle to turn said spout about its axis respectively to a position to conduct material from the bin to the receptacle or to a position to obstruct the flow of material from the bin, an upright baffle extending across the mouth of the spout with its lower edge spaced above the bottom wall ofthe trough, and a downwardly turned lip on the lower extremity of said spout and forming a continuation of the bottom wall thereof, said lip being so disposed as to'proj'ect inwardly of the receptacle beyond the adjacent edge thereof when the receptacle is in loading position. 7

i. In apparatus of'the class described, the combination with a receptacle element reciprocable in a substantially vertical path, of a s' oou't element pivotally supported adjacei'itjsa id path and adapted when in a downward'ly inclined posittion to extend over and into said receptacle element to discharge material therein and when in' an upwardly inclined position to cut off such discharge, and means to move said spout element from one position to the other comprising'spaced cam surfaces on one of said elements and a projection on "the other element adapted to cooperate with one or the other of said cam surfaces depending upon the direction of movement of said receptacle element to positively move said spout element about its pivotal axis.

5. In apparatus of thejclass described, the combination with'a receptacle element recip- 'roca'ble in a substantially vertical path, of a spout element pivotally supported adjacent said path and adapted when in a downwardly inclinedposition to extend over and into said receptacle element to discharge material therein and when in'an upwardly inclined position to out dfi such discharge, and means to move said spout element from one position to the other comprising a bracket on one of said elements having spaced 'cam surfaces and aprojec'tion on the other element adapted to cooperate with one or the other of said said path, means acting upon downward movement of the receptacle element to swing said spout element into a downwardly inclined position in which its end extendsover and into said receptacle element to discharge therein, cam and follower members onsaid elements respectively, and 'a bracket maintaining the member associated with the spout element at a distance below the bottom wall of that element, said members cooperating to positively swing said spout element to an upwardly inclined position upon upward movement of the receptacle element.

7. In apparatus of the class described, the combination with a receptacle element reciprocable in a substantially vertical path, of a spout element pivotally supported adjacent said path and adapted when in a downwardly inclined position to extend over and into said receptacle element to discharge material therein and when in anupwardly inclined po-' sition to cut off such discharge, and means to move said spout element from one position to the other comprising spaced cam surfaces associated with one of said elements and .a projection on the other of said cam surfaces depending upon the direction of movement of said receptacle element to pivotally move said spout element about its pivotal axis, and a bracket fixed to the spout element and maintaining the spout element moving means associated with that element at a distance below the bottom wall thereof.

In testimony whereof I have hereunto set my hand.

' WILLIAM K. LIGGETT. 

